CN210867411U

CN210867411U - Rotary speed variator

Info

Publication number: CN210867411U
Application number: CN201922252693.4U
Authority: CN
Inventors: 邰树强
Original assignee: Shandong Kuishe Intelligent Equipment Co ltd
Current assignee: Shandong Kuishe Intelligent Equipment Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-06-26
Anticipated expiration: 2029-12-16

Abstract

The utility model relates to a rotary speed changer, including frame, coupling in gear in the frame, and with gear engagement's rack still is equipped with the drive in the frame the rack drives gear revolve's drive arrangement, and the rigid coupling has power output shaft on the gear. The utility model utilizes the screw-nut structure and the gear-rack structure to realize the power transmission, thereby not only realizing the change of the force transmission direction, but also adjusting the diameters of the gear, the driving wheel and the driven wheel according to the needs, and meeting the requirements of different output rotating speeds; the driving motor is parallel to the screw rod, and the driving motor is arranged between the two side plates, so that the occupied space of the equipment is greatly reduced, and the driving device is suitable for being used on a small robot and a mechanical arm.

Description

Rotary speed variator

Technical Field

The utility model relates to a mechanical structure field especially involves a rotary speed changer.

Background

At present, in the speed reducer field, the mode of biography power is all realized through the meshing between the gear, can invariably pass power through the meshing of roller gear, when needs will pass power direction change 90 degrees, adopts bevel gear transmission usually. However, the bevel gear transmission has a large structure volume and high manufacturing and using costs, and is not suitable for being used in the fields of small robots and the like.

Disclosure of Invention

The utility model discloses to prior art not enough, provide a rotatory variable-speed motor, both can realize passing the change of power direction, reduced installation occupation space again, can also realize the change of output speed.

The utility model discloses a following technical scheme realizes, provides a rotary variable speed machine, including frame, coupling in gear in the frame, and with gear engagement's rack still is equipped with the drive in the frame the rack drives gear revolve's drive arrangement, and the rigid coupling has power output shaft on the gear.

According to the scheme, the driving device drives the rack to move, the gear is driven to rotate by meshing of the rack and the gear, the power output shaft is driven to rotate when the gear rotates, power output from the power output shaft is achieved, and the change of the force transmission direction is achieved due to the fact that the moving direction of the rack is different from the force transmission direction of the power output shaft.

Preferably, the driving device comprises a driving motor fixedly connected with the frame, a driving wheel fixedly mounted on an output shaft of the driving motor, and a driven wheel in transmission connection with the driving wheel, the driven wheel shaft is mounted on the frame, the driven wheel is coaxially and fixedly connected with a lead screw, the lead screw is in threaded connection with a sliding block fixedly connected with the rack, and the frame is provided with a sliding chute matched with the sliding block and/or the rack. The driving device of the optimized scheme drives the driving wheel to rotate through the driving motor, so that the driven wheel is driven to rotate, the driven wheel drives the screw rod to rotate when rotating, the screw rod cannot axially displace due to the fact that the driven wheel is axially fixed, and the sliding block cannot rotate due to the fact that the sliding groove is formed, so that the sliding block axially moves along the screw rod and finally drives the rack to move, and manufacturing and using costs are greatly reduced; the sliding groove can be a sliding groove which is matched with the rack and can slide the rack, can also be a sliding groove which is matched with the sliding block and can slide the sliding block, and can also be simultaneously provided with two sliding grooves which are respectively matched with the sliding block and the rack.

Preferably, the driven wheel and the racks are two, the two racks are respectively positioned on two sides of the gear, and the thread turning directions of the screw rods fixedly connected to the two driven wheels are opposite. The setting of this optimization scheme has improved power transmission efficiency, has improved gear revolve's stability moreover.

Preferably, the driving wheel and the two driven wheels are distributed in a triangular shape and are in transmission connection through a transmission belt. The triangular distribution of this optimization scheme sets up and makes two atress from the driving wheel more even, has improved the reliability that two racks passed power, connects through the drive belt, makes the structure simpler, and is with low costs, and the installation degree of difficulty is little.

As an optimization, the frame is including the installation the bottom plate of gear and rigid coupling in the bottom plate both ends just to the curb plate of homonymy extension, set up the through-hole with the power output shaft adaptation on the bottom plate, driving motor is located between the board of both sides, and one of them curb plate is passed to driving motor's output shaft, and the action wheel is located the curb plate outside. The frame of the optimized scheme has a simple structure, the driving motor is arranged between the two side plates, the overall occupied space of the equipment is reduced, and the frame is suitable for small robots and various mechanical arms; through the arrangement of the through hole, power output is facilitated; the driving motor and the driving wheel are supported by the side plates and are respectively positioned on two sides of the side plates, and the radial stress of the driving wheel and the gravity of the driving motor main body offset a part of each other, so that the stability in use is improved.

Preferably, one end of the power output shaft, which is far away from the gear, is fixedly connected with a flange plate. This optimization scheme is through setting up the ring flange, and the convenience is connected with other devices that accept power, has improved the convenience of using.

Preferably, the two side plates are fixedly connected through a reinforcing block, the reinforcing block is fixedly connected with the bottom plate, and the reinforcing block is provided with the sliding groove. This optimization scheme has not only improved the structural strength of frame through setting up the boss, sets up the spout on the boss moreover, has reduced the fluting on the bottom plate, has guaranteed the intensity of bottom plate.

The utility model has the advantages that: the transmission of power is realized by utilizing the screw nut structure and the gear rack structure, so that the change of the transmission direction is realized, the diameters of the gear, the driving wheel and the driven wheel can be adjusted according to the requirement, and different output rotating speed requirements are met; the driving motor is parallel to the screw rod, and the driving motor is arranged between the two side plates, so that the occupied space of the equipment is greatly reduced, the driving motor is suitable for being used on a small robot and a mechanical arm, and the driving motor can also be applied to the rotation of the swing head of the machine tool spindle.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a bottom perspective view of the present invention;

shown in the figure:

1. the device comprises a rack, 2, a sliding block, 3, a screw rod, 4, a driven wheel, 5, a driving wheel, 6, a side plate, 7, a gear, 8, a driving motor, 9, a transmission belt, 10, a bottom plate, 11, a flange plate, 12 and a reinforcing block.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 1 and 2, the rotary speed changer comprises a frame and a gear 7 coupled to the frame, wherein two sides of the gear 7 are respectively engaged with racks 1, the two racks are parallel to each other, and a driving device for driving the racks to drive the gear to rotate is further arranged on the frame.

The driving device comprises a driving motor 8 fixedly connected with the frame, a driving wheel 5 fixedly arranged on an output shaft of the driving motor, and a driven wheel 4 in transmission connection with the driving wheel, wherein a driven wheel shaft is arranged on the frame.

The frame includes bottom plate 10 and rigid coupling in bottom plate both ends and to the curb plate 6 of homonymy extension, driving motor and gear are located between the board of both sides, the rigid coupling has the power output shaft who is connected through bearing and bottom plate on the gear, set up the through-hole with the power output shaft adaptation on the bottom plate, the gear is coaxial with power output shaft, the one end rigid coupling that power output shaft kept away from the gear has ring flange 11, set up a plurality of screw holes of arranging along circumference on the ring flange, the bottom surface of ring flange and the bottom surface parallel and level of bottom plate.

An output shaft of the driving motor penetrates through one side plate, and the driving wheel is located on the outer side of the side plate. Two driven wheels 4 are arranged below the driving wheel, wheel shafts of the driven wheels are connected with the side plates through deep groove ball bearings, and the driving wheel 5 and the two driven wheels 4 are distributed in a triangular mode and are in transmission connection through a transmission belt 9. The driven wheels are coaxially and fixedly connected with screw rods 3, the screw rods are parallel to the output shaft of the driving motor and are vertical to the power output shaft, the screw thread directions of the screw rods fixedly connected to the two driven wheels are opposite, one ends of the screw rods are fixedly connected with the driven wheels, and the other ends of the screw rods are connected with the side plates through bearings. The screw rod 3 is connected with the sliding block 2 fixedly connected with the rack 1 through threads, a sliding groove matched with the sliding block and/or the rack is formed in the rack, the sliding groove matched with the sliding block is only formed in the embodiment for simplifying the structure, and meanwhile the sliding block is prevented from rotating along with the screw rod through the sliding groove.

The two side plates are also fixedly connected through a reinforcing block 12, the reinforcing block 12 is fixedly connected with the bottom plate 10, and the reinforcing block is provided with the sliding groove. The two reinforcing blocks are respectively positioned on the two sides of the bottom plate, and the two ends of the reinforcing block are respectively fixedly connected with the two side plates.

When the two-screw synchronous driving device is used, the two driven wheels are driven to rotate in the same direction by the rotation of the driving motor, and then the two screw rods are driven to rotate in the same direction. The transmission ratio can be adjusted by adjusting the diameters of the driving wheel, the driven wheel and the gear, and the change of the flange plate steering is realized by the reverse rotation of the driving motor.

Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.

Claims

1. A rotary transmission characterized in that: the gear rack comprises a rack, a gear (7) connected to the rack in a shaft mode, and a rack (1) meshed with the gear (7), wherein a driving device for driving the rack to drive the gear to rotate is further arranged on the rack, and a power output shaft is fixedly connected to the gear.

2. A rotary transmission as set forth in claim 1, wherein: the driving device comprises a driving motor (8) fixedly connected with the rack, a driving wheel (5) fixedly mounted on an output shaft of the driving motor, and a driven wheel (4) in transmission connection with the driving wheel, wherein a driven wheel shaft is mounted on the rack, a screw rod (3) is coaxially and fixedly connected to the driven wheel, a sliding block (2) fixedly connected with the rack (1) is in threaded connection with the screw rod (3), and a sliding groove matched with the sliding block and/or the rack is formed in the rack.

3. A rotary transmission as set forth in claim 2, wherein: the driven wheel (4) and the rack (1) are two, the two racks are respectively positioned on two sides of the gear, and the screw threads of the screw rod fixedly connected to the two driven wheels are opposite in rotating direction.

4. A rotary transmission as set forth in claim 3, wherein: the driving wheel and the two driven wheels are distributed in a triangular shape and are in transmission connection through a transmission belt.

5. A rotary transmission as set forth in claim 2, wherein: the frame is including the installation bottom plate (10) and the rigid coupling of gear in bottom plate both ends and curb plate (6) to the homonymy extension, set up the through-hole with the power output shaft adaptation on the bottom plate, driving motor is located between the board of both sides, and one of them curb plate is passed to driving motor's output shaft, and the action wheel is located the curb plate outside.

6. A rotary transmission as set forth in claim 5, wherein: and a flange plate (11) is fixedly connected to one end of the power output shaft, which is far away from the gear.

7. A rotary transmission as set forth in claim 5, wherein: the two side plates are further fixedly connected through a reinforcing block (12), the reinforcing block (12) is fixedly connected with the bottom plate (10), and the reinforcing block is provided with the sliding groove.